The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-657-5139, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-657-5139 |
| Primary Part Number | AES10M08B025WC2M52 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Head Height | 8.1 MILLIMETERS MAXIMUM MM |
| Fastener Length | 25.0 MILLIMETERS NOMINAL MM |
| Extended Washer Diameter | 18.0 MILLIMETERS MINIMUM MM |
| Thread Pitch in Millimeters | 1.25 |
| Thread Length | 22.0 MILLIMETERS NOMINAL MM |
| Material Document and Classification | ASTM F568M ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 8.0 MILLIMETERS MM |
| Head Style | CHAMFER FLANGE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 12.73 MILLIMETERS MINIMUM AND 13.00 MILLIMETERS MAXIMUM MM |
| Color | BLACK OVERALL |
| Surface Treatment | PHOSPHATE ZINC OVERALL |
| Material | STEEL PROPERTY CLASS 10.9 OVERALL |
| Thread Series Designator | M |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3836194003 | Oshkosh Defense Llc (USA) |
| AES10M08B025WC2M52 PRIMARY | The American Society of Mechanical Engineers (USA) |
| Reference | Meaning |
|---|---|
| 3836194 | D/9 Drawing number reference only Oshkosh Defense Llc |
NSN 5305-01-657-5139 is a Screw,cap,hexagon Head, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-657-5139 has 2 manufacturer part numbers on file: 3836194003 (Oshkosh Defense Llc), AES10M08B025WC2M52 (The American Society of Mechanical Engineers).
4 possible matches (shared part number, not a government interchangeability claim): 5305-01-657-5140, 5305-01-661-3595, 5305-01-666-8216. Verify interchangeability with system specifications before substitution.
Key specifications for AES10M08B025WC2M52: Head Height: 8.1 MILLIMETERS MAXIMUM MM; Fastener Length: 25.0 MILLIMETERS NOMINAL MM; Extended Washer Diameter: 18.0 MILLIMETERS MINIMUM MM; Thread Pitch in Millimeters: 1.25. 14 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.